Patch out cinc 17 EOL warning

Staring on May 1st. Running gitlab-ctl reconfigure includes this warning message:

WARN: This release of Cinc Client became end of life (EOL) on May 1st 2023. Please update to a supported release to receive new features, bug fixes, and security updates.
gitlab Reconfigured!

This is incorrect, as cinc 17 (based on chef 17) is supported until April 2024 - https://www.chef.io/blog/announcement-about-change-in-infra-client-17-end-of-life-timeline

We will work to patch out this warning from displaying in GitLab 16.0, but it will be warning in all GitLab 15 versions, and is safe to ignore.

• To patch out we should reopen the chef client calls in https://github.com/chef/chef/blob/17.10.0/lib/chef/client.rb#L330 and override the warn_if_eol method so it no longer prints.